Combined emergency brake and jack



UNTE S JOSEPH SCI-IUBNEL, OF NORTH ADAMS, MASSACHUSETTS.

COMBINED EMERGENCY BRAKE AND JACK.

Application filed November 22, 1921.

.To all w/wm t may concern.'

Be it known that I, Jos-EPH SCHUBNEL, a citizen of France, residing at North Adams, in the county of Berkshire and State of Massachusetts, have invented new and usefullmprovements in Combined Emergency Brakes and Jacks, of which the following is a specification.

This invention relates to brakes for automobiles and other vehicles which operate by a direct engagement with the ground, and its object is to provide a very efficient and reliable brake mechanism of this kind, and also to provide a sprag which can be set when necessary for holding the car on a steep grade.

The objects stated are attained by means 0f a novel combination and arrangement of parts to be hereinafter described and claimed, and in order that the same may be better understood, reference is had to the accompanying drawing, wherein:

Figure 1 is a side elevation of the mechanism, the brake being shown in operative position; Fig. 2 is a similar view showing the brake in inoperative position; Fig. 3 is an end view; Fig. 4t is an elevation illustrating the operation of the sprag, and Fig. 5 is an enlarged rear elevation of the sprag.

Referring specifically to the drawings, 10 denotes the side bars of a motor-vehicle chassis, and at. 11 is shown a fragment of the vehicle body. The brake which is the subject mattei' of the present application for patent consists of a pair of ground-engaging. cam-like members 12V positioned between the hind wheels 13 of the car alongside the same, one of said members being adjacent to one wheel, and the other member being adjacent to the other wheel, as shown in Fig. 3. rlhe two brake members are connected for simultaneous operation, and each one is on the outer end of a link or arm 14 having a a link member 15. (Jn the side bars 10 are brackets 16 carrying links 17 which are connected to the members 15, said links be ing pivoted at one end to the brackets 16, as shown at 17a, and at their other ends to the members 15, as shown at 17h. The pivotal connection between the links 14 and 15 is made by across rod 18, said rod also vforming the connection between the two brake members. The parts 14 and 15 form a toggle and when the two arms thereof are straightened out as shown in Fig. 1, the

pivotal connection with Serial No. 517,093.

cam member 12 at the outer end of the arm 14 is brought downwardly to come in contact with the ground, whereas when the two arms are folded or swung toward each other, as shown in Fig. 2, the cam member 12 is elevated and carried to non-operative position. In order to obtain a better hold on the ground, thel cam member 12 is toothed, as shown at 12a.

The toggle is operated in the manner described by a connecting rod 19, said rod being attached at one end to the rod 18, and extending forwardly therefrom, its forward end being connected to one branch 2() of an angle lever having its other branch 2O:L connected by a link 21 to an actuator' lever 22 provided with a hand grip 22a, said lever being located in the front compartment of the car so as to be within easy reach of the driver. A post 23 rising from the Hoor of the car supports the lever 22,

and a bracket 2st secured td the frame side A means is lalso provided for operatingy the rod 19 from the rear compartment of the car. In this compartment is a hand lever 25 supported by a standard 2G and connected by a link 27 to one arm 23 of an angle lever loose on a shaft 29 extending between and supported by brackets 30 on the side bars 10. The other arm 28 of the angle lever just described has a laterally extending finger 28b (Fig. 3) which is behind a rocker arm 31 fast on shaft 29. It will therefore be seen that when the hand lever 25 is swun sition shown in Fig. 2 to the position shown in Fig. 1, the finger 28b pressing against arm 31 causes shaft 29 to rock. This motion of shaft 29 is transmitted to the rod 19 by a rocker arm 32 fastened on said shaft and connected to the rod. It will be understood that two rods 19 are provided, one for each brake device, and the shaft 29 has two rocker arms 32 one being connected to one rod andthe other to the other rod. Only one of the rods 19 needs to be connected to the lever arm 20 because when the hand lever operated to swing said lever arm, the rod connected to said arm being connected by a rocker arm 32 to shaft 29, said shaft is also rocked, and as it is connected by a second rocker arm to the other rod 19, both rods are operated, and hence both brake devices are operated. The mechadownwardly from the pol nism can therefore be worked from either the tront or the rear compartment, the operation ot the hand lever 22 not affecting the hand lever 25.

To each brake unit is also connected a brace bar rlhis bar is pivoted at one end to a bracket 34 on the side bar 10, as shown at 35, from which bracket it extends rearwardl),v to the cani member 12. rllhis cani member is vertically slotted as shown in Fig. 3 to seat the rear end ot 'the brace bar 33, and a pivot bolt S6 passing thrviue'h the bar and the. cam member provides a pivotal connection between said parts. The brace bar projects reaiwwardlyv Jtrom the cam member 12 tor a short distance and to said projecting' end iis pivoted, as shown at '37, a spi-ap; which is pointed so that it maT die' into the ground. The sprag is intended to hold the car on a steep grade.

To the. top of the spray; 38 is secured a stout tlat spring 59 which extends rearwardlyv along; one side o't the cam member 12, and on this side ot said member is an eccentric 40 which bears on the tree end of the. spring'. lVhen the cam member` 12 is in elevated or inoperative position. as shown in Fig. 2*` the eccentric 4i() is pointing downward and pressing` on sprintY 39 to hold sprag` 3S elevated. To place the sprag in operative, or groundfengaging position, the rod 19 is operated to bringl the cam 12 downwardlj,7 to within a 'few inches from the ground. This movement ot the cam 12 causes the eccentric 4i() to back awa-y from the `free end ot spring' 39, with the result that the sprag' 38 is tilted lso that its point assumes a. position to enter the ground, as clearly shown in Fig. l.

rifhe two brake units are connected bv a transverse brace bar 11 connected at its ends to the pivot bolts 36, and intermediate their ends. said bar carries sleeves l2 through which the rod 18 loosely passes, with set collars 4:3 carried by said rod and engaging the outer ends of the sleeves. A. second brace bar 44e is also provided, the same. being connected at its outer ends to the pivots 17, and attached intermediate its ends to a sleeve 45 which is loose on rod 18 between the sleeves 42.

To the brace bars 33 are connected coiled springs 16 which are anchored to and depend 'from the 'trame side bars 10, said springs being' expanded when the brake units are lowered to operative position. and therefore assisting to restore and hold the same in elevated or non-operative position.

The toggle arms or linhs 14 and 15 are behind the rear axle housingi7 of the car, and the arm 15 has such a curve that it comes beneath said axle housing when the brake is down in operative position. The side o'i the arm 15 which faces the axlev housing 47 has rollers 48 engageable therewith. 0n thel 'trame side bar 10 is a roller 4-9 .across which the upper end of toggle arm 15 wipes when it swings to place the brake in operative position. Willen the cam member 12 reaches the ground-engaging poy sition shown .in Fig'. 1, the curved portion ot the arm 15 carrying the roller 4S is pressing' upwardly against the axle housing' 47 and elevating' the` same a sufficient distance to take the hind wheels 13 off the ground. The intake, mechanism therefore also serves to jack up the rear end ot' the car. The roller 4S assists the passage ot the curved portion ,otl the arm 15 beneath the axle housing', and it is particulas-l57 useful when disengag'inp; the brake, giving it an easier movementrThe roller 119 engaged bv the upper end. ot the arm 15 serves to `guide the same when it moves downwardly and under the axle housing as hereinbeiore described. and it also acts as a stop to prevent the arms 14 and 15 Jfrom striking the axle housing when the mechanism is in elevated-or non-operative position as shown in Figure 2.

l claim:

1. A ground-engaging' vehicle brake comprising` a pair ot' toggle members, a transverseijv extemlinil` rod connecting said members and forming' the joints there-oi?. sup- ]Aiorting means ttor one of the m-en'ibers ot the toggles, groundseng'aging cams rigid on the other members of the toggles. pivotalljv7 supported brace bars to which the cam ends oit the last-mentioned members are pivot-ally connected. actuating rods connected to the joints of the toggle members, and brace bars extending between the toggle members, said bars being connecte-d at their ends tosaid members, and having; a pivotal connection intermediate their ends withv the first-mem tioned rod.

2. A ground-engaging vehicle brake co1nprising a toggle, supporting means for the toggle, a ground-engaging cam rigid on one ot the members ot the toggle7 actuating` means connected to the toggle. a pivotallv supported brace bar to which the cam portion ot' the toggle member is pivotally connected, said bar project-ing` from the rear of the cam, a spragu pivoted to the rear end ot' the bar, and cooperating means on the cam and the sprag' for placing the latter in ground-entering position.

3. A. ground-engaging vehicle brake comprising a toggle. supporting' means for the toggle, a grountheneag'ing cam rigid on one ot the members of the toggle, actuating means connected to the toggle, a pivot-ally supported brace bar to which the cam portion oth the toggle member is pivotally connected. said bar projectingl from the rear ot the cam., a sprag' pivoted to the rear end ot the bar, a flat spring extending from the Sprag, and an eccentric on the cam bearing on the spring.

4. A ground-engaging vehicle brake comprising a toggle, supporting means for the toggle, a ground-engaging cam rigid on one of the toggle members, a vehicle engaging part on the other toggle lnember operable by an upward movement to jack up the vehicle when the cam engages the ground, and aetuating mea-ns connected to the toggle.

5. The combination with the frame and the rear axle of a vehicle; of a ground-engaging brake comprising a toggle having one of its members pivotall)7 supported by the vehicle frame, a ground-engaging cam on the other -toggle member, and means connected to the toggle for operating the same to bring the cam in contact with the ground, the first-mentioned toggle member having a part which swings upwardly and engages the axle to jack up the vehicle when the toggle is operated as aforementioned.

In testimony whereof I aHi'X my signature.

JOSEPH SCHUBNEL. 

